Arsenal's Walcott: Good to be underdogs
"People can say that Liverpool are favourites," Walcott told the club's official website.
"That is a good thing really. We can just concentrate on ourselves and they can have all the pressure.
"There is plenty of belief, the lads have been buzzing in training. We'll turn to Saturday now and then back to the Champions League.
"We will take the positives out of this game, look at Liverpool's negatives and see where it takes us. I think we will go there, play our football and get a goal."